Pump arrangement
US-10495074-B2 · Dec 3, 2019 · US
Cylinder barrels
Cylinder barrels · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04B1/2035 |
| Official title | Cylinder barrels |
| Display label | Cylinder barrels |
| Total patents | 145 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 20 |
| 2016 | 8 |
| 2017 | 18 |
| 2018 | 11 |
| 2019 | 20 |
| 2020 | 17 |
| 2021 | 17 |
| 2022 | 10 |
| 2023 | 6 |
| 2024 | 7 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid pressure pump and fluid pressure system
US-10443584-B2 · Oct 15, 2019 · US
Cylinder block and swash plate type liquid-pressure rotating apparatus including same
US-2019264564-A1 · Aug 29, 2019 · US
Variable displacement pump
US-2018328350-A1 · Nov 15, 2018 · US
Connector plate, hydraulic machine having a connector plate, and hydrostatic unit having a hydraulic machine and a hydraulic attachment part
US-2018252209-A1 · Sep 6, 2018 · US
Fluid pressure rotating machine
US-10066484-B2 · Sep 4, 2018 · US
Cradle-Mounted Swash with Trunnion-Mounted Positioning Arms
US-2018216731-A1 · Aug 2, 2018 · US
Hydraulic pump/motor
US-10018174-B2 · Jul 10, 2018 · US
Hydrostatic Axial Piston Machine
US-2018163708-A1 · Jun 14, 2018 · US
Piston of axial piston pump motor, cylinder block of axial piston pump motor, and axial piston pump motor
US-9964211-B2 · May 8, 2018 · US
Piston and liquid-pressure rotating device including same
US-2018119683-A1 · May 3, 2018 · US
Piston Fuel Pump
US-2018073477-A1 · Mar 15, 2018 · US
Hydraulic rotating equipment, and working machine provided with this hydraulic rotating equipment
US-9915249-B2 · Mar 13, 2018 · US
Opposed swash plate type fluid pressure rotating machine
US-9856851-B2 · Jan 2, 2018 · US
Cylinder drum of a hydrostatic axial piston machine having a wear-resistant layer
US-2017343107-A1 · Nov 30, 2017 · US
Hydraulic axial-piston device with features to enhance efficiency and power density
US-9816377-B2 · Nov 14, 2017 · US
Axial hydraulic piston pump
US-2017306937-A1 · Oct 26, 2017 · US
Hydrostatic pump barrel with sloped kidney ports
US-2017298912-A1 · Oct 19, 2017 · US
Swash plate pump having control pins in series
US-9726158-B2 · Aug 8, 2017 · US
Shoe for hydraulic rotary device, and hydraulic rotary device
US-2017184080-A1 · Jun 29, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04B1/2035?
- CPC F04B1/2035 is the Cooperative Patent Classification code for “Cylinder barrels.”
- How many patents are filed under CPC F04B1/2035 (Cylinder barrels)?
- Our database includes 145 publications tagged with this CPC code.
- Is patent activity under CPC F04B1/2035 growing?
- Publication counts under this code: 7 in 2024 vs 10 in 2025 (latest complete years).